OK, here is what the code recommended by nirgrahamuk returns:
Version:1.0 StartHTML:0000000107 EndHTML:0000001659 StartFragment:0000000127 EndFragment:0000001641
structure(list(ZipCode = c(37401L, 38231L, 38231L, 37056L, 37056L, 37056L, 37056L, 37056L, 37056L, 37056L), Plus4Low = structure(c(8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L), .Label = c("0001", "0021", "0031", "0051", "0061", "0081", "0091", "0102", "0401", "0521" ), class = "factor"), Plus4High = structure(c(8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L), .Label = c("0018", "0028", "0048", "0058", "0074", "0088", "0104", "0151", "0520", "0580"), class = "factor"), CenLat = c(35.045799, 36.202288, 36.202288, 0, 0, 0, 0, 0, 0, 0), CenLon = c(-85.306528, -88.420878, -88.420878, 0, 0, 0, 0, 0, 0, 0)), class = "data.frame", row.names = c(NA, -10L))